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No. 291,727. Patented Jan. 8, 1884.

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LIHVIS S. HAYES, OF CORTLAND, NEVF YORK.

TUBULAR CUTTER=LATHE.

SPECIFICATION forming part of Letters Patent No. 291,727, dated January 8, 188%.

(X0 model.)

To aZZ whom it may concern:

Be it known that I,Lnw1s S. Earns, a citizen of the United States, residing at Cortland, in the county of Cortland and State of New York, have invented certain new and useful Improvements in XVood-Turning Machines, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification.

The object of my invention is to automatically turn curved rods or pieces of wood also, to turn wooden rods 011 a curve for a given distance, and then turn the balance straight; also, to turn various other forms of curves.

My invention consists in the peculiar construction, combination, or arrangement of parts of the mechanism, as hereinafter pointed out in the claims.

In said drawings, Figure 1 is a top view of the table, the circular guides or ways, and the turning machinery. Fig. 2 is a top view of the table, showing the device for turning the rods or pieces on a curve for a given distance and then the balance straight. This figure shows the turn-tablewith guides or ways on it, whereby the stick or rod may be turned straight after a certain distance has been turned on a curve. Fig. 3 is an enlarged plan or top View of the mechanism, showing the revolving parts of the said mechanism in section; also, showing the ways for guiding the curved rods or sticks intotheturning-instruments also,showing the cutt-ing-instrument, whereby the turning is done on the revolving mechanism. Fig. & is a vertical section taken on the line 00 x of Fig. 3, showing the position of the cutting knife or instruments. Fig. 5 is a perspctive view of the cutting-knife. Fig. (5 is a side view, showing the outline of' the edge of the Fig. 7 is a side view of the end of the knife. Fig. 8 is a rear side view of Fig. 3, taken on the line 2 2, showing in detail more fully. Fi 9 is a rear end view taken 011 line 3 3 of Fig.

In the different figures the same letters denote the same parts.

Referring to the drawings,A represents the surface of an ordinary table used to support machinery, and on which work is done in a wood-working machine-shop.

B is an iron frame fastened rigidly to A. In B are the journals 0 O, &c., for supporting and holding the turning parts D D, &c.

E is a pulley, to which a belt is attached, by which motion is communicated.

F is the double tapered or flaring opening passing through the center of the revolving mechanism, in and through which the sticks or pieces of wood to be cut or turned have to pass.

G is a knife or cutting-instrument fastened by a nut or screw, H, passing through the slot shown in the knife, and having a washer next to the knife. The heel I of the knife G is placed at the narrowest place of the opening F, and follows the outline of said opening to the end, as shown in Fig. 3. This knife revolves very rapidly, and the sticks or pieces to be cut are held rigidly while they are turned properly. It will be noticed that a segment of the hollow revolving cuttingtool is cut off, as shown in section in Fig. 4, and a slit is made into the hollow center the entire length of the knife, so that the edge of the knife can act as acutter, and so that it can cut its entire length on the wood being operated upon. The opening F enlarges from the heel I of the knife each way on a curve or on a straight line, as desired. The size and shape of the opening F is made to accommodate the size and shape of the piece or stick of wood to be turned and the amount required to be turned off from the same. The chips and shavings fly out of the slit along the edge of the knife G.

J J, &c., represent ways or guides for guiding and directing the pieces or sticks to be turned into the cutter. The said sticks or pieces are first cut the desired curve, and are then laid in the ways J J, 850., and fed into the cutter, and when turned pass out through the other side through the ways there shown.

I11 Fig. 2 is shown a modification for turning the stick for a given distance on a curve and for the balance on a straight line. done as follows: The timber is cut with the requisite curved and straight portions. The straight portion is laid in the ways K K on the This is.

swinging arm L, which arm is of the same radius as the curve of the stick to be turned, and then the said arm is pushed forward and the stick fed to the cutter or turner, and when the arm is brought to the frame B or other stop and the requisite curve is cut or turned, the stick or piece is pushed forward through the ways K K, and the balance of the stick turned straight.

I \Vhat I claim is 1. In a machine for turning curved pieces of wood, or straight pieces with curved portions, a revolving hollow knife-holder having a slit in which a curved knife is secured, said holder curving outwardly in both directions from the knife-bearings, combined with said curved knife and with curved and straight guides, as and for the purposes set forth.

2. The combination, with the holder D, having knife-bearing F, and curved outwardly as shown, the knife G, adjusting-screw H, and interchangeable straight or curved guides J, as set forth.

In testimony whereof I aflix my signature, in presence of two witnesses, at Cortland, New York, September 23, 1882.

LEVIS S. HAYES,

Witnesses:

JOHN \V, SITGGET'J, TRYING H. PALMER. 

